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' (No Model.)

B. E. QUIMBY v WHEEL TIRE.

N0. 575,783. Patented Jan. 26,1897;

Ina afar UNITED STATES PATENT OFFICE.

EDWVARD E. QUIMBY, OF ORANGE, NEW JERSEY, ASSIGNOR TO THE NORTH BRITISH RUBBER COMPANY, LIMITED, OF EDINBURGH, SCOTLAND.

WH EEL-TIRE.

SPECIFICATION forming part of Letters Patent No. 575,783, dated January 26, 1897. Application filed December 1, 1894. Serial No. 530,563. (No model.)

To all whom, zit may concern: ferential recess a. Each of the walls of the Be it known that 1, EDWARD E. QUIMBY, of said recess a has formed in it two concentric Orange, New Jersey, have invented certain V-shaped grooves b and c. Improvements in Wheel-Tires, of which the The tire d, of rubber or other flexible mafollowing is a specification. terial, is provided near its edges with the Y This improvement relates to a wheel-tire of concentric ribs cl 61', substantially triangular thetypeofthatshownanddescribedinUnited in their cross-sections and so proportioned States patent to William Erskine Bartlett, that the outermost ribs (1 d fit the grooves Z) Z; dated January 5, 1892, and serially numbered in the wheel-rim, while the adjoining ribs 01 d i 466,532. fit the grooves c c in the wheel-rim.

I The invention consists of an inflatable an- \Vithin the tire d is the inflatable tube 6. nular tube, an annular flexible tire approxi- \Vhen the parts are assembled and the inner mately U-shaped in cross-section provided tube e inflated, the portions of the tire near along each of its edges with two concentric its edges are thrust outwardly and the ribs ribs'subst-antially triangular in the shapes of are thus compressed into their seats in the their cross-sections, the said tire embracing concentric grooves 12 b and c c, as illustrated the said tube, in combination with an annuin Fig. 4, whereby the tire is locked in place.

ar rim provided upon its convex side with a \Vhat is claimed as the invention is iircumferential recess presenting upon the 1. Atire of flexible materialin archedform, .nner face of each of its side walls two conhaving on its exterior convex surface and near centric grooves adapted to afford the beareach edge, two parallel ribs or projections,

ings for and to retain the said concentric ribs substantially as described.

of the tire when they are seated in said re- 2. The combination of a wheel-rim provided cesses and the said tube is inflated. with a circumferential recess having in each The accompanying drawings, illustrating of its walls or sides two channels, the transthe improvement, are as follows: verse distance between the sides of the inner Figure l is a cross-section of a tire comchannels nearest the axis of the wheel being posed of rubber or other flexible material U- less than the transverse distance between the shaped in cross-section and provided on each sides of the outer channels, a tire of flexible i of its opposite edges with two parallelribs apmaterial provided with ribs adapted to be proximately triangular in cross-section, also seated in said channels and an inflatable tube showing in cross-section'the inner tube in its within said tire serving when inflated to hold deflated condition. Fig. 2 is a cross-section the ribs of the said tire to their respective of acircumferentially recessed metallic seats in the said channels, substantially as wheel-rim suitably grooved to receive and described. retain the tire-ribs. Fig. 3 is a cross-section 3. The combination of an annular tire of of a wooden wheel-rim similarly grooved and flexible material having neareach of its edges recessed. Fig. 4: is a cross-section of the two parallel ribs or projections, a wheel-rim wooden rim of Fig. 3, the ribbed tire, and inhaving a recess with its walls grooved and I nor tube, showing the parts assembled, with channeled to receive said ribs and an inflatthe tube in its inflated condition and the the able tube within said tire serving when inribs seated in their respective grooves in the fiated to hold the ribs of the said tire to their rim. respective seats in the said channels, substan- In carrying this improvement into practice tially as described. there may be employed a sheet-metal wheel- 4. A tire of flexible material adapted to as- 5 rim having approximately the shape in crosssume a U-shaped form in cross-section and section represented in Fig. 2, or there may be to be applied to a wheel-rim, said tire having employed the Wooden wheel-rim a, repreon its exterior convex surface and near each sented in Fig. 4. On its exterior or convex edge angular projections 'or ribs d and adside the wheel-rim is provided with a circumjacent to said projections angular projections I00 or ribs (1 said. ribs (1 and 01 respectively at each side of said tire having their homologous sides parallel, substantially as described.

5. A wheel-rim having a circumferential recess, the said recess being in the form of a double dovetail b b, c c with outwardly-converging sides, the distance between the sides I) Z) being less than the distance between the sides 0 c, substantially as described.

6. The combination, as herein set forth, of an ann ular wheel-rim presenting upon its convex side a circumferential recess the side walls of which are provided with concentric grooves V-shaped in their cross-sections, a tire of flexible material approximately U- EDVV. E. QUIMBY. Witnesses A. M. JoNEs, E. GATTERER. 

